package org.zhou.config;

import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.servlet.Filter;
import javax.sql.DataSource;
import java.util.HashMap;

@Configuration
public class DruidConfig {
    @ConfigurationProperties(prefix = "spring.datasource")
    @Bean
    public DataSource druidDaaSource(){
        return new DruidDataSource();
    }

    //后台监控功能 相当于web.xml
//    springboot 内置了servlet容器 所以没有web.xml  替代方法 ServletRegistrationBean
    @Bean
    public ServletRegistrationBean a(){
        ServletRegistrationBean<StatViewServlet> bean = new ServletRegistrationBean<>(new StatViewServlet(), "/druid/*");
        //后台需要有人登陆 账号密码
        HashMap<String , String> initParameters = new HashMap<>();
        //增加配置
        initParameters.put("loginUsername","root");//登陆key 是固定的   loginUsername
        initParameters.put("loginPassword","root");//

        //允许谁可以访问
        initParameters.put("allow","localhost");
        // 禁止谁访问
//        initParameters.put("zhou","");  //后面一个参数是id  禁止这个ip地址访问


        bean.setInitParameters(initParameters);//设置 初始化参数
        return  bean;
    }

    //filter

    @Bean
    public FilterRegistrationBean webStartFilter(){
        FilterRegistrationBean<Filter> bean = new FilterRegistrationBean<>();
        bean.setFilter(new WebStatFilter());

        //可以过滤什么请求
        HashMap<String, String> initParameters = new HashMap<>();
//        这些东西不进行统计
        initParameters.put("exclusions","*.js,*.css,/druid/*");

        bean.setInitParameters(initParameters);

        return bean;

    }




}
